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In the conclusion of Justice League's three-part debut episode, two of the League members have become casualties in the battle against the Imperium, those huge, shape-shifting, bug-like creatures who have launched an invasion of the earth. Rushing to the rescue of their fallen comrades, the remaining Leaguers must also race against time before the all-but-invulnerable Imperium conquers the world. Further complicating matters are the evil machinations of Senator Carter (voiced by Gary Cole), a purported pacifist who is actually an alien in disguise! All three episodes of "Secret Origins" were released as a single DVD "movie" in April of 2002.